| Titre : |
Synthesis and evaluation of a novel shavings-based cationic flocculant |
| Type de document : |
texte imprimé |
| Auteurs : |
Dai Chunji, Auteur ; Wang Xuechuan, Auteur ; Wei Fei, Auteur ; Qiang Taotao, Auteur ; Ren Longfang, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 81-87 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Collagène
Composés organiques -- Synthèse
Copolymères greffés
Copolymérisation
Eaux usées -- Epuration
Extraction (chimie)
Floculant
Floculation
Greffage (chimie)
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
A cationic collagen flocculant (PCDAC) was synthesized by graft copolymerization using industrial gelatin extracted from leather shavings as the raw material with acryloyloxyethyl trimethyl ammonium chloride (DAC) as the monomer. The synthesis was initiated with tert-butyl hydroperoxide and sodium sulfite. The graft copolymer was characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM).
The effects of PCDAC dosage, system pH, flocculation temperature and time on PCDAC flocculation were studied and the optimum conditions were as follows: PCDAC dosage 0.03g/mL; system pH7.0 ; flocculation temperature 40°C ; and flocculation time 20 minutes. Under the optimum conditions, the new flocculant showed an excellent flocculation effect, and the removal rate of pollutants in a simulated oil field wastewater ranged up to 94.1%. The flocculation mechanism was also discussed. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Material and apparatus - Extraction of collagen - Synthesis of cationic collagen flocculant (PCDAC) - Analysis of PCDAC
- RESULTS AND DISCUSSION : Physicochemical characteristics of the PCDAC graft copolymers - Flocculation performance of PCDAC |
| En ligne : |
https://drive.google.com/file/d/1U_tusIyRsZpCvorfxYG41y2xccH_Iek-/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30560 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 2 (03-04/2018) . - p. 81-87
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